Gaya APA

Smyth, H, D, W., Wilbur, I, U, C. (1939). **Matter, motion and electricity a modern approach to general physics . New York: .

Gaya MLA

Smyth, Henry, De, Wolf., Wilbur, I., Ufford,, Charles. "**Matter, motion and electricity a modern approach to general physics". New York: , 1939. Text.